What number added to 5 would equal up to - 11

15 guests are in attendance and 4 of them are randomly selected to receive a door prize. if all 4 prizes are identical, in how many ways can the prizes be awarded?

Enrollment at a school last year was 1220 this year the student population decreased by 10% how many total students are attending the school this year?

Frances can complete 91 oil changes in 7 days. How many oil changes can Frances complete in 11 days?

What is the distance between 2 and 3 on the number line

Madison is making party favors she wants to make enough favors so each guest gets the same number of favors she knows that I'll be six or eight guests at the party what is the least number of favors Madison should make

Solve for x 3x^2-21x+3=0

Ashley recently opened a store that uses only natural ingredients. She wants to advertise her products by distributing bags of samples in her neighborhood.

The experimental probability of seeing a hawk at the again viewing center on any given day is 20%. If Jun visits the center 240 days, on about how many days can she expect to see a hawk?

Factor the quadratic expression 3x to the 2nd power + 9x + 6

What is the answer to x-9=-15+7x